Automatic Karl Fischer Moisture Tester

Products Details

Automatic Karl Fischer Moisture Tester is an intelligent laboratory instrument developed for the precise determination of trace moisture content using the internationally recognized Karl Fischer Coulometric Titration method. Serving as a foundational diagnostic system within our comprehensive oil test equipment range, this analytical technique provides exceptional sensitivity and accuracy, making it the preferred solution for measuring extremely low water content in insulating oils, petroleum products, organic solvents, chemical reagents, and other liquid samples.

The instrument automatically performs electrolyte balancing, moisture titration, endpoint detection, result calculation, and data display without manual intervention. Advanced digital control technology ensures stable electrolysis current, fast response speed, and highly repeatable measurement results.

The tester adopts a high-resolution LCD display with an intuitive operation interface, allowing users to easily configure testing parameters and monitor the complete titration process in real time. The built-in magnetic stirrer ensures uniform sample mixing, improving electrolysis efficiency and measurement accuracy.

The complete titration cell includes an electrolysis cell, measuring electrode, electrolytic electrode, drying tube, sample injection port, and magnetic stirring system. High-quality glass components provide excellent chemical resistance while minimizing environmental moisture interference during testing.

Widely used in transformer oil laboratories, power plants, petrochemical industries, pharmaceutical companies, research institutions, and quality inspection laboratories, the instrument provides fast, reliable, and repeatable moisture analysis for routine laboratory testing and industrial quality control.

Measurement & System Specifications

Measurement Specifications
Parameter	Specification
Measurement Method	Karl Fischer Coulometric Titration
Measuring Range	1 μg – 200 mg H₂O
Resolution	0.1 μg
Sensitivity	0.1 μg H₂O
Accuracy	±(2 μg – 5 μg) Typical
Electrolysis Control	Automatic
Endpoint Detection	Automatic

 

Display & Operation
Parameter	Specification
Display	LCD Screen
Operation	Automatic
Stirring System	Built-in Magnetic Stirrer
Result Display	Automatic Calculation
Sample Injection	Syringe Injection

 

Power Supply
Parameter	Specification
Power Supply	AC220V ±10%, 50Hz
Power Consumption	≤40W

 

Environmental Conditions
Parameter	Specification
Operating Temperature	5°C – 40°C
Relative Humidity	≤80% RH

 

Parameter	Specification
Weight	5.8 kg
Dimensions (L × W × H)	380 × 290 × 180 mm

How the System Works

The tester operates using the Karl Fischer Coulometric principle. After a sample is injected into the sealed titration cell, the moisture contained in the sample reacts quantitatively with the Karl Fischer reagent.

During the electrolysis process, iodine is generated automatically to react with water molecules. Once all moisture has been consumed, the instrument automatically detects the endpoint, calculates the water content, and displays the final result without manual calculation.

The built-in magnetic stirring system ensures complete mixing of the sample and electrolyte, providing stable electrolysis conditions and highly repeatable analytical performance.

Features

• Karl Fischer Coulometric titration technology
• Automatic moisture determination
• High-precision trace water analysis
• Automatic electrolysis control
• Automatic endpoint detection
• Large LCD display
• Built-in magnetic stirring system
• Automatic calculation of moisture content
• Fast testing speed
• Excellent repeatability
• Low reagent consumption
• High measurement sensitivity
• Stable electrolysis current control
• Easy sample injection
• Chemical-resistant titration cell
• Suitable for trace moisture analysis
• User-friendly operation
• Reliable laboratory performance

Applications & Use Cases

Application Scenarios

• Power Utilities: Measurement of moisture content in transformer insulating oil and electrical insulating liquids.

• Transformer Manufacturers: Quality inspection of new insulating oils before transformer assembly.

• Petroleum Industry: Water content analysis of lubricating oils, hydraulic oils, fuel oils, and petroleum products.

• Chemical Laboratories: Moisture determination in chemical solvents, organic liquids, and raw materials.

• Pharmaceutical Industry: Trace moisture analysis for pharmaceutical chemicals and production materials.

• Research Institutes: Laboratory analysis requiring high-precision Karl Fischer moisture determination.

Functional Applications

• Transformer Oil Moisture Testing

• Insulating Oil Water Content Analysis

• Lubricating Oil Moisture Measurement

• Hydraulic Oil Moisture Testing

• Petroleum Product Analysis

• Chemical Solvent Moisture Determination

• Organic Liquid Water Content Testing

• Pharmaceutical Moisture Analysis

• Laboratory Quality Control

• Industrial Material Inspection

Customer Success Stories

Power Utility Transformer Oil Testing

• Challenge: A power utility needed to accurately monitor moisture content in transformer insulating oil during routine maintenance to prevent insulation failures.

• Solution: Using the Automatic Karl Fischer Moisture Tester, engineers quickly measured trace moisture with high accuracy and repeatability, enabling timely maintenance decisions.

• Results:

  • Fast and reliable moisture analysis

  • Improved transformer reliability

  • Reduced maintenance risks

  • Higher testing efficiency

FAQ

• What can this tester measure?

  It accurately determines trace moisture in transformer oil, lubricating oil, hydraulic oil, petroleum products, chemical reagents, and other industrial liquids.

• Why use Karl Fischer titration?

  Karl Fischer titration is the industry-standard method for trace moisture analysis, providing excellent accuracy, sensitivity, and repeatability.

• Is it suitable for transformer oil testing?

  Yes. It is widely used by power utilities, transformer manufacturers, electrical laboratories, and maintenance companies for insulating oil moisture analysis.

• Does the instrument operate automatically?

  Yes. It automatically performs electrolysis, endpoint detection, moisture calculation, and result display, minimizing operator intervention.

• Why is moisture testing important?

  Regular moisture testing helps maintain insulation performance, extend transformer service life, reduce failure risks, and support preventive maintenance.

Weshine Advantages

Weshine Electric specializes in high-voltage diagnostic instruments and transformer oil testing solutions. Operating alongside our advanced oil trace moisture tester systems, our Karl Fischer Moisture Tester combines high-precision coulometric titration technology, intelligent automation, compact design, and user-friendly operation to deliver reliable trace moisture analysis for power utilities, manufacturers, laboratories, and industrial service providers worldwide.